_Disadvantages of Potatoes._--Irish potatoes are eaten almost as commonly in some portions of the United States as are corn-products in others, and therefore deserve the careful consideration of the hygienist. While it is not believed that, like the latter, potatoes give rise to any definite disease, it is unfortunately true that they are theoretically worse breads than those made from the grain just referred to. In whatever way cooked, they are moist and require no chewing, and as a consequence many persons with delicate digestions do not assimilate them properly. _Arrowroot._--The preparations of arrowroot are considered digestible, though here again we find that such articles of diet are generally moist and of not proper consistence to be chewed, and they are, therefore, not as valuable as are breads made from wheaten flour. _Rice._--Rice is used by a large portion of the world's inhabitants. When cooked thoroughly and very dry, it is perhaps almost as good bread as is that made from wheat. The starch granules of the former, like those of arrowroot, are somewhat smaller than those of wheat. If it were possible to keep rice-flour in good condition, and if it could be made into light-bread, it is likely that it would be superior to wheaten flour, but this does not appear feasible. A peculiar and very fatal disease prevails in the East, known as "kak-ke" or "beri-beri," which is now generally regarded as being the result of eating decomposed rice. The writer has seen one or two examples of what he considers American beri-beri, but as our rice-eating population is small, it is not likely that this disease will ever become a serious problem in the United States.